Tractor seat



Oct. 2, 1951 E, M, O'DONNELL 2,569,730

TRACTOR SEAT Filed July 26. 1947 INVEINTOR. [am and /Z 0 Donne HTTOR/VEY Patented Get. 2, 1951 UNITED PATENT OFFICE 'rnao'ron SEA Edward M. ODonnell, :Galvaglouia Application nay as, 1941, .SeriaLNo, 7 3,771

1 Myinvention pertains to La tractor or other seat.

An object of my invention is to provide a tractor seat which'is resiliently mounted to provide comfort for-the occupant thereof A further and important object of my invention is to provide a seat which besides being resiliently mounted will constantly occupy a'horizontal position regardless of the angle of the vehicle upon which the seat is mounted to .thereby provide a comfortable seat for the occupant thereof.

A further object of my invention isto provide a completely resiliently mounted seat which in cludes shock absorbing features at all times, and to provide means for adjusting the resilientfeatures so that the seat can be regulated for lighter or heavier persons.

A further object of my invention is to provide a seat having the above features, which is of simple construction.

With these and other-objects in view, my invention consists in the construction, arrangement, andccmbi at o of the'var narts f my v caw e y thechie t ecnt plated a ttained. as h n f er mo e u et .io t p nt d ou in my .elaimanand illustrated in the cc mpanyin drawin s, in whic :Fieun .1 a se tiona View of Figur ,2 ta en alone th r' ines el of Fi ure A and Figure 2 is a rear view of the, arrangement.

I have used the character in to designate a seat, preferably for a tractor, although it will be understood that my invention pertains to any type of seat, the seat shown being of the slightly dished type in which the operator can sit. Attached at I! to the seat I is a vertically positioned fairly heavy plunger l2 which is threadably attached at l3 with a wing nut M. The plunger 12 is received through a cylindrical opening IS in a carriage member [6, the plunger including a key at I! for reception into both the plunger and the member [6 to prevent rotation of the plunger l2, and yet to allow free vertical movement. The carriage member l6 includes the extending bosses I8 in which are secured the pins or shafts [9, upon which shafts I9 are journaled the annular rollers having the flanges 2|. The shafts I9 include suitable openings 22 which communicate to the rollers and to the further grease fittings 23 for providing lubrication at desired intervals to the rollers. The rollers 20 ride within a pair of spaced channel shaped tracks 24 which tracks are in the shape of an arc and having upper flanges 25, lower flanges 26 and side 2 Glaims. (Cl. 155- 121) v2 flanges 2'1, these tracks beingjournaled at their outer ends by means of the transverse portions l8,' and attached at29 to the tracks are the downwardly inclined lugs 30.

"Rigidly secured atl3 l to one of the side walls 21 of the tracks is an extending fiat bar 32 which can be secured by means of bolts 33 to the standard upwardly extending seat supporting ,bar 34 or the tractor.

The carriage member 1-6 includes the integral angular portions 35 to which are attached the rods 35 which rods pass through openings 3! in the -lugs 31B. Receiving the rods 36 are the fairly strong helical compression springs "38, the ends of which are received within ,the cupped members 39, which members'39 bear against the rods 40 which rods are pivoted at 4| to suitable -bosses enea h t port ensta.

Forming an integral extension of the other side wall 21 is aplate-M having a lower portiond-S to which is pivotedat 44 a tension adjustinglever 45 which is pivoted at 46 to a pair of links 4,1 which links are pivotally and securely attached at "48 to the ends of the rods 40. Pivotally attached at 49 to the lever45 is a small control handle 50 having the leaf spring 5! bearing against the lever 45, and continuing from the member .50 is the arm 52which includes the pawl 53 which is received withany one of the notches 54 in the upper plate portion .42. The plate 42 further includes an opening at 55, which is adapted in some cases to coincide or register with the opening 56 in the carriage member [6, and forthe reception of a suitable pin ,5! (see Fig. 1') in thosecases when it is desired to lock the seat against arcuate movement, but to still allow completely vertical movement.

Receiving the plunger I2 and at the top of the carriage I6 is a strong helical compression spring 58, and positioned between the lower end 59 of the carriage is a further strong compression spring 60 which bears against the adjusting nut M. It will now be seen that the seat [0 is resiliently supported so that it can travel upwardly and downwardly with respect to the carriage I8, and it will be seen further that if the tractor is riding on a hillside, etc., that the angular positioning of the tractor through the gravitational effect of the occupant of the seat, will cause the seat to maintain its horizontal position, and will thrust one pair of the rollers 20 to either one side or the other, with the springs 38 being compressed on one side and partially released on the other, in this manner causing the occupant of the seat to be completely comfortable regardless of the position of the vehicle, and with the springs 38 still absorbing shocks and the like. In this manner the seat I is completely resiliently supported regardless of angularity.

It will be observed that the springs 38 are firmly retained due to the structure above described, and in many cases it is desirable to adjust such a seat so that it can support persons of a lighter weight, or persons of a substantially heavier weight.

For instance as shown in Figure 2, the arrangement is set to support a person weighing about 100 pounds, with the springs being at a greater extended length, this pertaining to both the springs 38, as well as the springs 58 and 60, the nut I4 being at its lowermost position and wherein the spring resiliency is the least To accommodate a person weighing 200 pounds, the lever is first released by squeezing the handle toward the lever which releases the pawl 53 and the lever is forced over to the position shown by the 200 pound marking. This action causes both links 41 to pull inwardly on the springs 38 thereby compressing these springs so that the resilient range of the springs is not as great and will accommodate a greater weight, and the adjusting nut [4 can be used to tighten up against the vertically positioned springs for the'same purpose. The pawl 53 can then be relocked in any selected notch thereby providing the above mentioned adjustment. 7

After the pawl is locked all of the connecting elements are thus secured in a'positive manner, and it will now be seen that I have provided the advantages mentioned in the objects of my invention with'further advantages being readily apparent. Some changes may be madein the construction and arrangement of the parts of my invention without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims any-modified forms of structure or use of mechanical equivalents which may be reasonably included within their scope.

I claim as my invention: 1 I

.1. A tractor seat comprising a supporting framework, a seat member including a vertical plunger attached thereto, a spring receiving said plunger, means for adjustably tensioning said spring, a carriage member receiving said plunger, means for suspendingsaid carriage member within said framework to provide oscillation of the seat member laterally, including a pair of spaced race-waysattached tosaid framework, rollers received in said race-ways, said rollers being attached to said carriage member, compression springs bearing against said carriage member and against the framework, said race-Ways being substantially of an arcuate configuration to cause said rollers to travel in an arc therein, means for adjustably tensioning said compression springs to provide forvaried weights of occupants of said seat member, including levers bearing against saidcompression springs, links attached to said levers, a control lever attached to said links whereby movement of said control lever will compress or release said compression spring, means for attaching said supporting framework to standard seat supports.

2. A tractor seat comprising a supporting framework, a seat member, means for suspending said seat member within said framework to provide oscillation of the seat member laterally, including a pair of spaced race-ways attached to said framework, rollers received in said raceways, a carriage member to which said rollers are attached, compression springs bearing against said carriage member and against the framework, said race-ways being substantially of an arcuate configuration to. cause said rollers to travel in an arc'therein, means for adjustably tensioning said compression springs to provide for varied weights of occupants of said seat member, including levers bearing against said compression springs, links attached to said levers, a

control lever attached to said links wherebymovement of said control lever will compress or release said compression spring, means for attaching said supporting framework to standard seat supports. r

' EDWARD M. ODONNELL.

- REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Canada Oct. 26, 1920, 

